Office chair



FIG. 1 is an isometric view of an office chair;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a top plan view thereof.

The broken lines showing is included for the purpose of illustratingenvironment and forms no part of the claimed design.

The ornamental design for an office chair, as shown and described. 